A brief discussion on several major applications of wireless geomagnetic vehicle detectors

The advantages and pain points of geomagnetic products are already a commonplace topic. To summarize briefly: the advantages are nothing more than reasonable cost, simple installation, no impact on the city appearance, no fear of interference, and geomagnetism has been widely used.

As for the pain points, there are mainly three points: one is accuracy, the second is power consumption, and the third is waterproof and detachable convenience. It is reported that geomagnetism has been used in large quantities since 2013, and so far, geomagnetism is still the most widely used in the entire on-street parking management. Of course, many people are trying to replace geomagnetism with other technologies, but in actual scenarios, geomagnetism is still indispensable, which fully demonstrates that parking detection in actual on-street scenarios still requires the support of multiple technologies.

1. Roadside parking: Intelligent parking system

According to professionals, geomagnetism was first used in parking detection in 2015. At present, geomagnetic nails have been installed in more than 34,000 public parking spaces in Tianjin, basically achieving full coverage. After the launch of intelligent parking on March 10, 2021, after citizens park in public parking lots, the geomagnetic nails will send relevant information such as the vehicle's license plate number, parking space number, vehicle appearance, parking time and departure time to the roadside repeater through a signal, and then the repeater will transmit the collected signal to the public company's first-level management platform, thereby realizing intelligent management. The

smart roadside parking space system mainly calculates the parking time of the vehicle by installing geomagnetic sensors to achieve accurate billing. After the car enters the parking space, the geomagnetic device senses and transmits it to the data platform through the sensor. The parking time can be accurate to seconds, which will effectively improve the efficiency of parking space utilization.

The architecture of the smart roadside parking space system:

1. A geomagnet is buried in the center of the parking space. When the vehicle is parked in the corresponding parking space, the geomagnet buried in the parking space can sense whether there is a car parked through the earth's magnetic field.

2. After the vehicle is parked steadily, the geomagnetic will send a signal to the geomagnetic gateway set at a suitable location. After receiving the signal, the geomagnetic gateway will transmit the signal to the cloud platform. The signal received by the platform will be sent to the administrator's handheld device by wireless transmission. The administrator can know whether the corresponding parking space is occupied based on the received information.

3. The administrator uses the handheld device to capture the vehicle information, and the captured information will be fed back to the cloud platform at the same time. The platform will start to record and monitor the vehicle charging information in real time.

4. When the vehicle leaves, the owner can pay the fee by himself through the mobile phone APP or face-to-face with the administrator. At the same time, the administrator's handheld device will also transmit the corresponding information to the platform, and the relevant information can be traced back later.



Advantages of the smart roadside parking system:

1. Simple and easy installation and maintenance: The wireless geomagnetic detector is easy to install and easy to disassemble and maintain.

2. Easy to master and manage: For users, the geomagnetic roadside parking system is not only low-cost, but also simple to operate, easy to master, and very convenient to manage.

3. Flexible installation location: It is also applicable to any road surface, not affected by nearby ferromagnetic objects, and has a small installation size.

4. Strong anti-interference ability: Geomagnetic detection technology is not affected by external electromagnetic waves, and can be used normally on thunderstorm days. It also has excellent waterproof performance and can work around the clock.



The data analysis of the smart roadside parking space system extracts and analyzes the static basic data and dynamic traffic data of parking, and provides KPI indexes for relevant areas and sections, providing decision-making support for government planning departments, construction departments, information management departments, etc.



From September 1, 2020, the on-street parking spaces in Luoyang City will bid farewell to manual charging, realize automatic sensing, self-payment, and full networking, and enter a new era of smart urban parking. It is reported that the main function of the current Luoyang Smart Parking System Platform is parking space query, and it will gradually launch remote reservation of parking spaces, staggered sharing of open parking spaces, and non-sensing payment functions. Citizens can use the "Luoyang Good Parking" APP to query the parking space status of the destination in real time, complete self-parking, automatic timing, and self-payment, thereby reducing time waste and fuel waste and relieving traffic pressure.

The smart parking system adopts the geomagnetic + PDA technology route. The geomagnetic device accurately timed and the management platform accurately billed, which fundamentally solved the stubborn problem of chaotic parking charges. The staff said: "In the past, when charging was done manually, one administrator could only manage 10 to 20 parking spaces. Now with this smart parking method, the toll collector has become an administrator, and one person can manage 60 to 80 parking spaces, which greatly saves labor costs."

Chongqing Bishan District has adopted digital transformation for temporary parking spaces on the road, using "geomagnetic + handheld PDA" and "high-position video" and other methods to achieve smart parking. Citizens can use the "Bihao Parking" WeChat public account or APP to understand the use of surrounding parking spaces in real time. In recent days, Chongqing Bihao Smart Parking Management Co., Ltd. has strengthened the testing and management of relevant equipment such as handheld PDAs and parking space geomagnetism to ensure the smooth implementation of smart parking work for temporary parking spaces on roads in Bishan District. It is reported that Chongqing Liangjiang New District has put into use more than 4,000 smart parking spaces, and innovatively adopted the "cloud platform + geomagnetic + information interaction" smart parking management mode, which can realize automatic timing, accurate billing, cashless self-service payment and other functions.

At present, there are 5,217 intelligent parking spaces in Suining City, accounting for 64% of the parking spaces in the city. It is understood that the intelligent parking system has multiple parking functions and can form an intelligent parking solution based on different scenarios using geomagnetism, POS machines, inspection vehicles, low-position video, high-position video and other intelligent devices.

2. Oncoming Vehicle Warning System

As society pays more and more attention to civilized driving and traffic safety, people are constantly improving the safety of vehicle driving and the construction of intelligent traffic facilities. Due to the complex terrain of China's highways, narrow roads, many bends and steep slopes. When a vehicle encounters a bend, the driver lacks sufficient understanding of the traffic conditions ahead. The short response time will cause the driver to misjudge and cause traffic accidents. The problem of accidents caused by sharp turns needs to be solved urgently.

The vehicle warning system is a real-time dynamic detection, warning, guidance and control of road traffic. Using geomagnetic vehicle detection technology, real-time detection of vehicles driving in blind spots; using outdoor LED display and voice alarm to actively warn of dangers visually and audibly; all-weather automatic detection and active release of warning information, not affected by weather, light, climate change; expandable functions, that is, to realize the function of road vehicle detector (statistical traffic volume and speed, etc.).


The vehicle warning product is aimed at traffic safety issues in adverse terrain such as sharp turns and steep slopes. This product installs geomagnetic vehicle detectors at a certain distance before and after the sharp turn, and installs LED information signs and voice warning devices on the side of the road in the direction of motor vehicle travel. When the geomagnetic vehicle detector equipment detects a motor vehicle approaching, the system links the LED information sign to display the content "vehicles ahead, slow down" and makes voice reminders at the same time to inform the driver in advance of the vehicle conditions ahead and remind the driver of the vehicle information behind the sharp turn, so that the driver can slow down in advance and ensure the safety of driving in the curve, thereby achieving the goal of safe and orderly road traffic and protecting the life and property safety of drivers.